This was a while back but I thought I'd save you the hassle I had. I bought a bunch of gas and liquid quick disconnects on amazon and paid the price. They were absolute garbage. Some of them fit but others no. The plastic was brittle and cracked on some. I looked at my older connecters and they were all CM Becker with a CMB on the side. I tried to continue using CMB. I recently went to buy some at my homebrew shop and he had switched to kegland. I bought those and they seemed to work well. I will not be trying to save a buck on connecters in the future. I will try to stick with cmb or kegland. Has anybody else had similar experiences?